<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>单文件上传</title>
</head>
<body>
<h2>单文件上传</h2>
<form action="onfile" method="post" enctype='multipart/form-data'>
    <input type="file" name="file"><br>
    <input type="submit" value="提交">
</form>

<a href="/api/downloadExcel" target="_blank" class="btn btn-warning">
    <span class="glyphicon glyphicon-export"></span> 导出
</a>
</body>
</html>